Study on the Deep Foundation Pit Support Schemes for Adjacent Buildings Based on Multi-dimensional Calculation
Based on the deep foundation pit adjacent buildings on the Jiqi Road Comprehensive Gallery in Jinan,Shandong Province,Venus Computing and Midas GTS 3D Finite Element Analysis software were used to compare two support schemes of filling piles+internal support with steel sheet piles+internal support+micro steel pipe iso-lation piles.The analysis results show that the maximum horizontal displacement of steel sheet pile support is about 51％smaller than that of cast-in-place pile support.The internal force is about 49％to 54％smaller than that of cast-in-place pile support.The vertical displacements of buildings are similar.The micro-steel pipe isolation pile not only has horizontal bearing capacity,but also improves the horizontal deformation isolation effect.By comparing the numerical simulation data with the field monitoring data,although there are numerical differences between them,their changing trends are consistent and in line with the regular changes,which shows that the simulation re-sults are of guiding significance.Under the same conditions,the support scheme of steel sheet piles+internal sup-port+micro steel pipe isolation piles is more economical and effective.
deep foundation pitsupport schemeadjacent buildingsmulti-dimensional calculationisolation pile
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